Heater



April 7, 1925.

J. A. O. TERRIAULT HEATER Filed April 14 1923 Patented hpr. 7, 1925.

earner HEATER.

Application filed April 14, No. 632,175.

To all whom it 771 1 Concern:

Be it known that I, Josnrrr ALEXIS QVILA TERRIAULT, a resident of the city of Ottawa, in the Province of Ontario and Dominion of Canada, have invented certain new and useful Improvements in Heaters, of which the following is aspecification.

This invention relates to improvements in heaters and more particularly to heater tops for use with gas, water and steam heaters as covered in my previous application for patent, file No. 559,939, filed May 10, 1922, and the objects of this invention are to provide an eflicient and more practical water-tight means for securing the top of the tubes in a heater in place and at the same time allowing for their expansion and contraction.

Other objects are to provide a screw secured top plate in combination with an inner plate, to facilitate the assembling of the heater; 7

Still further objects are the provision of an inner plate formed with spaced clownwardly projecting hollow extensions designed to embrace in water-tight connection the restricted tubes connecting the main tubes with the heater dome.

Yet another object is the provision of a top plate so formed that the inner plate, above mentioned, fits snugly thereinto and is retained in this position by means of a nut coupling adapted to bear on the inner plate While being screwed down on the top outer plate. 7

With these and other objects in view, the invention consists essentially in the novel construction and arrangement of parts de scribed in the present specification and illustrated by the accompanying drawings that form part of the same.

Referring tothe drawings, in which like characters of reference indicate corresponding parts in each figure,

Figure 1 is a. vertical section through the top of the heater.

Figure 2 is an enlarged cross section of the top of the heater.

In the drawings, A designates the heater top as a whole, B the cylindrical body portion of the heater provided with a plurality of tubes 10 therein fitted with caps 11 having screw-threaded restricted openings 12 therethrough for fibre tubes 13.

Referring now more particularly to the essential features of my invention, 14: is the top plate or casting formed with the discharge opening therein, 15, and screwthreaded at 16 to engage with the cylindrical body portion 13. The upper portion of the plate 14 is sloped outwardly .from the bottom upwardly on the inside at 17 to form a self-grinding joint with an inner plate 18 sloped inwardly from the top downwards.

This inner plate is designed to fit over and to receive therethrough the fibre tubes 13 and is formed with downwardly projecting and spaced hollow extensions 13 through which and the plate itself, as above mentioned, the vent tubes from the caps 12 extend to be secured in water-tight connection therewith by means of packing 19, Washer 20 and plug nuts 21 screw-threaded at 22 to v engage with the inner plate.

The outside of the top plate 14 is formed with the shoulder 15 threaded to receive a threaded nut coupling member 23 designed to bear on the upwardly projecting portion 24 of the inner plate beyond the upper plate 141- to hold and brace the inner plate in position as said member 23 is screwed down on the upper plate. 25 are flanges on the member 23 threaded to receive the dome member 26 of the heater.

From the foregoing, it will be seen that I have provided in this top construction for heaters of all kinds, very efficient and practical means for making the several joints water-tightand at the same time readily adjustable. The outer plate can be quickly screwed onto the cylindrical body portion of the heater and with equal'despatch the inner plate is fitted thereinto and over the eXtensions from the main tubes. The plug nuts are then tightened up and finally the nut coupling member 23 is screwed down and the dome put on.

As many changes could be made in the above construction. and many apparently widely different embodiments of my inven' tion within the scope of the claims, constructed without departing from the spirit or scope thereof, it is intended that all matter contained in the accompanying specification and drawings shall be interpreted as illustrative and not in a limiting sense. What I claim as my invention is:

A heater top of the character described comprising, in combination with a heater body, a sleeve formed with an upwardly and outwardly sloped inner side, and cylindrical on the outside, and screw-threaded at its lower end on the inside to engage with said body portioinn cover formed with a plural:- ity of spaced downward extending extensions having openings therein to receive fire tubes and sloped inwardly on the outside from the top to fit into the sloped sides of the sleeve,- and means between the Walls of said extensions and the fire tubes designed to form water-tight joints for the fire tubes,

nut coupling meansndapted to engage with the outwardly threaded portion of the sleeve 10 and the top of the cover whereby the cover is pressed downwardly and snugly held in position.

In Witness whereof I have hereunto set my hand.

JOSEPH ALEXES OVlLA TERREAULT. 

